Final Draft
International Standard
ISO/FDIS 501
Hard coal — Determination of the crucible swelling number
Reference number
ISO/FDIS 501
Edition 5
© ISO 2024
Final Draft International Standard
Under development
This draft is in the approval phase.
Will replace ISO 501:2012

Abstract

ISO 501:2012 specifies a method for determining the swelling properties of hard coal when heated in a covered crucible.

The "crucible swelling number" (CSN) is also known as the "free swelling index" (FSI).

General information

  • Status
     : Under development
    Stage
    : Final text received or FDIS registered for formal approval [50.00]
  • Edition
     : 5
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040  75.160.10 
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